Jubilee bracelets

Hi guys, i want to buy a duro. However, im not really happy with the bracelets they come with, so im interested in buying a jubilee for the duro. The problem is im finding it difficult to find where to buy the bracelets(dont know if the ones from ebay or ali are ok), how is the fit(do they need adjusting), do i need to get a clasp individually, so could anyone with Experience in changing the bracelets help. Thanks!